SP Range of 400Hz Frequency Converters and Ground Power Units
The SP series of frequency converters utilise the latest in power conversion switching technology to provide aircraft with an extremely flexible and cost effective 400Hz power source for installation at convenient “point of use” locations and in avionics workshops, aircraft maintenance hangars and test laboratories where low noise, ease of use and compact dimensions are demanded.
In contrast to 400Hz systems, found in many older airports, the SP frequency converters have an inherently high power factor of up to 0.98 with a sine wave input low harmonics rectifier input stage. The inverter is an advanced design using high frequency pulse width modulation producing a sine wave output through an integral isolation transformer and via a circuit breaker for indoor use, or with optional contactors for outdoor use.
The frequency converter can be delivered with a single output or dual output circuits and fitted with industrial type of multiple socket outlets or could be supplied with flexible 400Hz power cables and supplementary sensing fitted with standard aircraft power connectors.
The frequency converters are supplied with 115V single phase output up to 40kVA and from 10kVA to 180kVA with three phase output.
The basic mechanical construction is in vertical format with ingress protection IP20 with optional IP42 and IP54, there is a horizontal version available for mounting on a mobile trolley, trailer or on floor stands.
For details of our current range of 400Hz Frequency converters and Ground Power units, please click the link 400Hz SP Series 2016